YUE Baohua, BU Xianni, WANG Xueguang, et al. Effect of calcination temperature on catalytic performance of olivine for toluene cracking[J]. CIESC Journal, 2009, (2): 378-383.
YUE Baohua, BU Xianni, WANG Xueguang, et al. Effect of calcination temperature on catalytic performance of olivine for toluene cracking[J]. CIESC Journal, 2009, (2): 378-383.DOI:
The effects of calcination temperature on the structure
phase
reduction properties and catalytic behavior of olivine in toluene cracking were investigated by BET analysis
XRD
H2-TPR and TEM.It was found that the crystal form and catalytic activity of olivine were markedly influenced by calcination temperature. The main phases of olivine calcined at a lower temperature were Mg2SiO4 and Fe2O3. Increasing the calcination temperature to over 1100℃
Fe2O3 phase disappeared gradually and (Fe
Mg)SiO3 phase was formed
causing a significant decrease in the number of active sites.The perfect catalytic activity was related to higher free iron oxide contents which can be realized by appropriate thermal treatment.In the experiment
the olivine calcined at 900℃ showed the best catalytic activity and high resistance to carbon deposition.